<template>
  <div class="role-manage">
    <div class="query-form">
      <el-form ref="form" :inline="true" :model="queryForm">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="queryForm.roleName" placeholder="请输入角色名称"/>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="getRoleList">查询</el-button>
          <el-button @click="handleRest('form')">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
    <div class="base-table">
      <div class="action">
        <el-button type="primary" @click="handleAdd">创建</el-button>
      </div>
      <el-table :data="roleList">
          <el-table-column
              v-for="item in columns"
              :key="item.prop"
              :prop="item.prop"
              :label="item.label"
              :width="item.width"
              :formatter="item.formatter"
          >
          </el-table-column>
          <el-table-column label="操作" width="260">
            <template #default="scope">
              <el-button size="mini" @click="handleEdit(scope.row)">编辑</el-button>
              <el-button size="mini" type="primary" @click="handleOpenPermission(scope.row)">设置权限</el-button>
              <el-button type="danger" size="mini" @click="handleDel(scope.row._id)">删除</el-button>
            </template>
          </el-table-column>
      </el-table>
      <el-pagination
          class="pagination"
          background
          layout="prev, pager, next"
          :total="pager.total"
          :page-size="pager.pageSize"
          @current-change="handleCurrentChange"
      />
    </div>
    <el-dialog title="用户新增" v-model="showModal">
      <el-form
          ref="dialogForm"
          :model="roleForm"
          label-width="100px"
          :rules="rules">
          <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="roleForm.roleName" placeholder="请输入角色名称"/>
          </el-form-item>
          <el-form-item label="备注" prop="remark">
            <el-input
                type="textarea"
                :rows="2"
                v-model="roleForm.remark"
                placeholder="请输入备注"/>
          </el-form-item>
      </el-form>
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="handleClose">取 消</el-button>
          <el-button type="primary" @click="handleSubmit">确 定</el-button>
        </span>
      </template>

    </el-dialog>

    <!-- 权限弹框 -->
    <el-dialog title="权限设置" v-model="showPermission">
      <el-form label-width="100px">
        <el-form-item label="角色名称">
          {{curRoleName}}
        </el-form-item>
        <el-form-item label="选择权限">
          <el-tree
              ref="permissionTree"
              :data="menuList"
              show-checkbox
              node-key="_id"
              default-expand-all
              :props="{ label: 'menuName' }"
          >
          </el-tree>
        </el-form-item>
      </el-form>
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="showPermission = false">取 消</el-button>
          <el-button type="primary" @click="handlePermissionSubmit">确 定</el-button>
        </span>
      </template>

    </el-dialog>

  </div>

</template>

<script>
import utils from '../utils/utils'
export default {
  name: "role",
  data(){
    return {
      queryForm:{
        roleName: ""
      },
      columns:[
        {
          label:'角色名称',
          prop:'roleName',
        },
        {
          label:'备注',
          prop:'remark'
        },
        {
          label:'权限列表',
          prop:'permissionList',
          formatter:(row, column, value) => {
            let names = []
            let list = value.halfCheckedKeys || []
            list.map(key=>{
              if (key) names.push(this.actionMap[key])
            })
            return names.join(',')
          }
        },
        {
          label:'创建时间',
          prop:'createTime',
          width: 150,
          formatter(row, column, value) {
            return utils.formateDate(new Date(value))
          }
        }
      ],
      roleList: [],
      pager: {
        total: 0,
        pageSize: 10,
      },
      showModal: false,
      action: 'create',
      roleForm: {},
      rules: {
        roleName: {
          required: true,
          message: '请输入角色名称'
        }
      },
      // 权限展示
      showPermission: false,
      curRoleId: "",
      curRoleName: "",
      menuList: [],
      // 菜单映射表
      actionMap: {}

    }
  },
  mounted() {
    this.getRoleList()
    this.getMenuList()
  },
  methods:{
    // 角色列表初始化
    async getRoleList(){
      try {
        let { list,page } = await this.$api.getRoleList(this.queryForm) // { list,page } 解构
        this.roleList = list
        this.pager.total = page.total
      } catch (e) {
        throw new Error(e)
      }
    },
    // 菜单列表初始化
    async getMenuList(){
      try {
        let list = await this.$api.getMenuList() // { list,page } 解构
        this.menuList = list
        this.getActionMap(list)
      } catch (e) {
        throw new Error(e)
      }
    },
    // 表单重置
    handleRest(form){
      this.$refs[form].resetFields()
    },
    // 角色添加
    handleAdd(type, row) {
      this.action = 'create'
      this.showModal = true
    },
    // 角色编辑
    handleEdit(row) {
      this.action = 'edit'
      // this.roleForm = row
      this.showModal = true
      this.nextTick(() =>{
        this.roleForm = row
      })
    },
    // 角色删除
    async handleDel(_id){
      await this.$api.roleOperate({_id,action:'delete'})
      this.$message.success('删除成功')
      this.getRoleList()
    },
    // 弹框关闭
    handleClose() {
      this.handleRest('dialogForm')
      this.showModal = false
    },
    // 角色提交
    handleSubmit() {
      this.$refs.dialogForm.validate(async (valid) =>{
        if (valid) {
          let { roleForm, action } = this // 解构 roleForm, action
          let params = { ...roleForm,action }
          let res = await this.$api.roleOperate(params)
          if (res) {
            this.showModal = false
            this.$message.success('创建成功')
            this.handleRest('dialogForm')
            this.getRoleList()
          }
        }
      })
    },
    handleCurrentChange() {

    },
    // handlePermissionClose() {
    //   this.showPermission = false
    // },
    handleOpenPermission(row) {
      this.curRoleId = row._id
      this.curRoleName = row.roleName
      this.showPermission = true
      let { checkedKeys } = row.permissionList
      setTimeout(() =>{
        this.$refs.permissionTree.setCheckedKeys(checkedKeys)
      })
    },
    async handlePermissionSubmit() {
      let nodes = this.$refs.tree.getCheckedNodes
      let halfKeys = this.$refs.tree.getHalfCheckedKeys()
      let checkedKeys = []
      let parentKeys = []
      nodes.map((node) =>{
        if (!node.children) {
          checkedKeys.push(node._id)
        } else {
          parentKeys.push(node._id)
        }
      })
      let params = {
        _id: this.curRoleId,
        permissionList:{
          checkedKeys,
          halfCheckedKeys: parentKeys.concat(halfKeys)
        }
      }
      await this.$api.updatePermission(params)
      this.showPermission = false
      this.$message.success('设置成功')
      this.getRoleList()
    },
    getActionMap(list) {
      let actionMap = {}
      const deep = (arr) =>{
        while (arr.length) {
          let item = arr.pop()
          if (item.children && item.action) {
            actionMap[item._id] = item.menuName
          }
          if (item.children && !item.action) {
            deep(item.children)
          }
        }
      }
      deep(JSON.parse(JSON.stringify(list)))
      this.actionMap = actionMap
    }
  }
}
</script>

<style lang="scss">

</style>
